> ## Documentation Index
> Fetch the complete documentation index at: https://astral-6ef288be-claude-ascii-globe-mouse-interaction-bupya.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# API Configuration

> Supported chains and schema information

# API Configuration

```
GET /api/v0/config
```

Returns the API configuration including supported chains and the EAS schema used for location attestations.

## Example

```bash theme={null}
curl "https://api.astral.global/api/v0/config"
```

## Response

```json theme={null}
{
  "chains": {
    "base-sepolia": true,
    "sepolia": true,
    "arbitrum": true,
    "celo": true,
    "base": false
  },
  "schema": "0xba4171c92572b1e4f241d044c32cdf083be9fd946b8766977558ca6378c824e2",
  "schema_fields": "uint256 eventTimestamp,string srs,string locationType,string location,string[] recipeType,bytes[] recipePayload,string[] mediaType,string[] mediaData,string memo",
  "version": "v0"
}
```

## Response Fields

| Field           | Type   | Description                              |
| --------------- | ------ | ---------------------------------------- |
| `chains`        | object | Supported chains and their active status |
| `schema`        | string | EAS schema UID for location attestations |
| `schema_fields` | string | Schema field definitions                 |
| `version`       | string | API version                              |

## Schema Fields Explained

| Field            | Type      | Description                                  |
| ---------------- | --------- | -------------------------------------------- |
| `eventTimestamp` | uint256   | Unix timestamp of the location event         |
| `srs`            | string    | Spatial reference system (e.g., "EPSG:4326") |
| `locationType`   | string    | Format identifier (e.g., "geojson-point")    |
| `location`       | string    | Stringified location data                    |
| `recipeType`     | string\[] | Location derivation methods                  |
| `recipePayload`  | bytes\[]  | Method-specific data                         |
| `mediaType`      | string\[] | MIME types of attached media                 |
| `mediaData`      | string\[] | Base64-encoded media                         |
| `memo`           | string    | Optional description                         |

<Note>
  This schema follows the [Location Protocol v0.2](https://github.com/DecentralizedGeo/location-protocol-spec/tree/v0.2-draft) specification. Verification is in progress — see [Location Records](/concepts/location-attestations#schema) for details.
</Note>